[libc++] Redefine Fuchsia locale base support on top of the new API #122489
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This follows the same path we've been doing for all platforms so far, moving away from the old definition of the locale base API.
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@llvm/pr-subscribers-libcxx Author: Louis Dionne (ldionne) ChangesThis follows the same path we've been doing for all platforms so far, moving away from the old definition of the locale base API. Full diff: https://github.com/llvm/llvm-project/pull/122489.diff 7 Files Affected:
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index f7721b1047b81e..f3dc740a88449c 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -499,7 +499,6 @@ set(files
__locale_dir/locale_base_api.h
__locale_dir/locale_base_api/android.h
__locale_dir/locale_base_api/bsd_locale_fallbacks.h
- __locale_dir/locale_base_api/fuchsia.h
__locale_dir/locale_base_api/ibm.h
__locale_dir/locale_base_api/musl.h
__locale_dir/locale_base_api/openbsd.h
@@ -507,6 +506,9 @@ set(files
__locale_dir/support/apple.h
__locale_dir/support/bsd_like.h
__locale_dir/support/freebsd.h
+ __locale_dir/support/fuchsia.h
+ __locale_dir/support/no_locale/characters.h
+ __locale_dir/support/no_locale/strtonum.h
__locale_dir/support/windows.h
__math/abs.h
__math/copysign.h
diff --git a/libcxx/include/__locale_dir/locale_base_api.h b/libcxx/include/__locale_dir/locale_base_api.h
index bb0da889f4c845..b112a4aef7765a 100644
--- a/libcxx/include/__locale_dir/locale_base_api.h
+++ b/libcxx/include/__locale_dir/locale_base_api.h
@@ -99,6 +99,8 @@
# include <__locale_dir/support/freebsd.h>
#elif defined(_LIBCPP_MSVCRT_LIKE)
# include <__locale_dir/support/windows.h>
+#elif defined(__Fuchsia__)
+# include <__locale_dir/support/fuchsia.h>
#else
// TODO: This is a temporary definition to bridge between the old way we defined the locale base API
@@ -111,8 +113,6 @@
# include <__locale_dir/locale_base_api/android.h>
# elif defined(__OpenBSD__)
# include <__locale_dir/locale_base_api/openbsd.h>
-# elif defined(__Fuchsia__)
-# include <__locale_dir/locale_base_api/fuchsia.h>
# elif defined(__wasi__) || _LIBCPP_HAS_MUSL_LIBC
# include <__locale_dir/locale_base_api/musl.h>
# endif
diff --git a/libcxx/include/__locale_dir/locale_base_api/fuchsia.h b/libcxx/include/__locale_dir/locale_base_api/fuchsia.h
deleted file mode 100644
index f6ef454ba7ada7..00000000000000
--- a/libcxx/include/__locale_dir/locale_base_api/fuchsia.h
+++ /dev/null
@@ -1,18 +0,0 @@
-// -*- C++ -*-
-//===-----------------------------------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_FUCHSIA_H
-#define _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_FUCHSIA_H
-
-#include <__support/xlocale/__posix_l_fallback.h>
-#include <__support/xlocale/__strtonum_fallback.h>
-#include <cstdlib>
-#include <cwchar>
-
-#endif // _LIBCPP___LOCALE_DIR_LOCALE_BASE_API_FUCHSIA_H
diff --git a/libcxx/include/__locale_dir/support/fuchsia.h b/libcxx/include/__locale_dir/support/fuchsia.h
new file mode 100644
index 00000000000000..43c8ba23ade077
--- /dev/null
+++ b/libcxx/include/__locale_dir/support/fuchsia.h
@@ -0,0 +1,140 @@
+//===-----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_DIR_SUPPORT_FUCHSIA_H
+#define _LIBCPP___LOCALE_DIR_SUPPORT_FUCHSIA_H
+
+#include <__config>
+#include <cstdlib>
+#include <cwchar>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+namespace __locale {
+
+struct __locale_guard {
+ _LIBCPP_HIDE_FROM_ABI __locale_guard(locale_t& __loc) : __old_loc_(::uselocale(__loc)) {}
+
+ _LIBCPP_HIDE_FROM_ABI ~__locale_guard() {
+ if (__old_loc_)
+ ::uselocale(__old_loc_);
+ }
+
+ locale_t __old_loc_;
+
+ __locale_guard(__locale_guard const&) = delete;
+ __locale_guard& operator=(__locale_guard const&) = delete;
+};
+
+//
+// Locale management
+//
+using __locale_t = locale_t;
+
+inline _LIBCPP_HIDE_FROM_ABI __locale_t __newlocale(int __category_mask, const char* __name, __locale_t __loc) {
+ return ::newlocale(__category_mask, __name, __loc);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI void __freelocale(__locale_t __loc) { ::freelocale(__loc); }
+
+inline _LIBCPP_HIDE_FROM_ABI lconv* __localeconv(__locale_t& __loc) {
+ __locale_guard __current(__loc);
+ return std::localeconv();
+}
+
+//
+// Other functions
+//
+inline _LIBCPP_HIDE_FROM_ABI decltype(MB_CUR_MAX) __mb_len_max(__locale_t __loc) {
+ __locale_guard __current(__loc);
+ return MB_CUR_MAX;
+}
+#if _LIBCPP_HAS_WIDE_CHARACTERS
+inline _LIBCPP_HIDE_FROM_ABI wint_t __btowc(int __ch, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::btowc(__ch);
+}
+inline _LIBCPP_HIDE_FROM_ABI int __wctob(wint_t __ch, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::wctob(__ch);
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t
+__wcsnrtombs(char* __dest, const wchar_t** __src, size_t __nwc, size_t __len, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return ::wcsnrtombs(__dest, __src, __nwc, __len, __ps); // non-standard
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t __wcrtomb(char* __s, wchar_t __ch, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::wcrtomb(__s, __ch, __ps);
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t
+__mbsnrtowcs(wchar_t* __dest, const char** __src, size_t __nms, size_t __len, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return ::mbsnrtowcs(__dest, __src, __nms, __len, __ps); // non-standard
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t
+__mbrtowc(wchar_t* __pwc, const char* __s, size_t __n, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::mbrtowc(__pwc, __s, __n, __ps);
+}
+inline _LIBCPP_HIDE_FROM_ABI int __mbtowc(wchar_t* __pwc, const char* __pmb, size_t __max, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::mbtowc(__pwc, __pmb, __max);
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t __mbrlen(const char* __s, size_t __n, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return std::mbrlen(__s, __n, __ps);
+}
+inline _LIBCPP_HIDE_FROM_ABI size_t
+__mbsrtowcs(wchar_t* __dest, const char** __src, size_t __len, mbstate_t* __ps, __locale_t __loc) {
+ __locale_guard __current(__loc);
+ return ::mbsrtowcs(__dest, __src, __len, __ps);
+}
+#endif
+
+_LIBCPP_DIAGNOSTIC_PUSH
+_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wgcc-compat")
+_LIBCPP_GCC_DIAGNOSTIC_IGNORED("-Wformat-nonliteral") // GCC doesn't support [[gnu::format]] on variadic templates
+#ifdef _LIBCPP_COMPILER_CLANG_BASED
+# define _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT(...) _LIBCPP_ATTRIBUTE_FORMAT(__VA_ARGS__)
+#else
+# define _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT(...) /* nothing */
+#endif
+
+template <class... _Args>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT(__printf__, 4, 5) int __snprintf(
+ char* __s, size_t __n, __locale_t __loc, const char* __format, _Args&&... __args) {
+ __locale_guard __current(__loc);
+ return std::snprintf(__s, __n, __format, std::forward<_Args>(__args)...);
+}
+template <class... _Args>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT(__printf__, 3, 4) int __asprintf(
+ char** __s, __locale_t __loc, const char* __format, _Args&&... __args) {
+ __locale_guard __current(__loc);
+ return ::asprintf(__s, __format, std::forward<_Args>(__args)...); // non-standard
+}
+template <class... _Args>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT(__scanf__, 3, 4) int __sscanf(
+ const char* __s, __locale_t __loc, const char* __format, _Args&&... __args) {
+ __locale_guard __current(__loc);
+ return std::sscanf(__s, __format, std::forward<_Args>(__args)...);
+}
+
+_LIBCPP_DIAGNOSTIC_POP
+#undef _LIBCPP_VARIADIC_ATTRIBUTE_FORMAT
+
+} // namespace __locale
+_LIBCPP_END_NAMESPACE_STD
+
+#include <__locale_dir/support/no_locale/characters.h>
+#include <__locale_dir/support/no_locale/strtonum.h>
+
+#endif // _LIBCPP___LOCALE_DIR_SUPPORT_FUCHSIA_H
diff --git a/libcxx/include/__locale_dir/support/no_locale/characters.h b/libcxx/include/__locale_dir/support/no_locale/characters.h
new file mode 100644
index 00000000000000..20e45fc350e2ef
--- /dev/null
+++ b/libcxx/include/__locale_dir/support/no_locale/characters.h
@@ -0,0 +1,98 @@
+//===-----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_CHARACTERS_H
+#define _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_CHARACTERS_H
+
+#include <__config>
+#include <__cstddef/size_t.h>
+#include <cctype>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#if _LIBCPP_HAS_WIDE_CHARACTERS
+# include <cwctype>
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+namespace __locale {
+
+//
+// Character manipulation functions
+//
+inline _LIBCPP_HIDE_FROM_ABI int __islower(int __c, __locale_t) { return std::islower(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __isupper(int __c, __locale_t) { return std::isupper(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __isdigit(int __c, __locale_t) { return std::isdigit(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __isxdigit(int __c, __locale_t) { return std::isxdigit(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __toupper(int __c, __locale_t) { return std::toupper(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __tolower(int __c, __locale_t) { return std::tolower(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __strcoll(const char* __s1, const char* __s2, __locale_t) {
+ return std::strcoll(__s1, __s2);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI size_t __strxfrm(char* __dest, const char* __src, size_t __n, __locale_t) {
+ return std::strxfrm(__dest, __src, __n);
+}
+
+#if _LIBCPP_HAS_WIDE_CHARACTERS
+inline _LIBCPP_HIDE_FROM_ABI int __iswctype(wint_t __c, wctype_t __type, __locale_t) {
+ return std::iswctype(__c, __type);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswspace(wint_t __c, __locale_t) { return std::iswspace(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswprint(wint_t __c, __locale_t) { return std::iswprint(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswcntrl(wint_t __c, __locale_t) { return std::iswcntrl(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswupper(wint_t __c, __locale_t) { return std::iswupper(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswlower(wint_t __c, __locale_t) { return std::iswlower(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswalpha(wint_t __c, __locale_t) { return std::iswalpha(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswblank(wint_t __c, __locale_t) { return std::iswblank(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswdigit(wint_t __c, __locale_t) { return std::iswdigit(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswpunct(wint_t __c, __locale_t) { return std::iswpunct(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __iswxdigit(wint_t __c, __locale_t) { return std::iswxdigit(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI wint_t __towupper(wint_t __c, __locale_t) { return std::towupper(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI wint_t __towlower(wint_t __c, __locale_t) { return std::towlower(__c); }
+
+inline _LIBCPP_HIDE_FROM_ABI int __wcscoll(const wchar_t* __ws1, const wchar_t* __ws2, __locale_t) {
+ return std::wcscoll(__ws1, __ws2);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI size_t __wcsxfrm(wchar_t* __dest, const wchar_t* __src, size_t __n, __locale_t) {
+ return std::wcsxfrm(__dest, __src, __n);
+}
+#endif // _LIBCPP_HAS_WIDE_CHARACTERS
+
+inline _LIBCPP_HIDE_FROM_ABI size_t
+__strftime(char* __s, size_t __max, const char* __format, const struct tm* __tm, __locale_t) {
+ return std::strftime(__s, __max, __format, __tm);
+}
+
+} // namespace __locale
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_CHARACTERS_H
diff --git a/libcxx/include/__locale_dir/support/no_locale/strtonum.h b/libcxx/include/__locale_dir/support/no_locale/strtonum.h
new file mode 100644
index 00000000000000..0e7a32993e7369
--- /dev/null
+++ b/libcxx/include/__locale_dir/support/no_locale/strtonum.h
@@ -0,0 +1,49 @@
+//===-----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_STRTONUM_H
+#define _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_STRTONUM_H
+
+#include <__config>
+#include <cstdlib>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+namespace __locale {
+
+//
+// Strtonum functions
+//
+inline _LIBCPP_HIDE_FROM_ABI float __strtof(const char* __nptr, char** __endptr, __locale_t) {
+ return std::strtof(__nptr, __endptr);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI double __strtod(const char* __nptr, char** __endptr, __locale_t) {
+ return std::strtod(__nptr, __endptr);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI long double __strtold(const char* __nptr, char** __endptr, __locale_t) {
+ return std::strtold(__nptr, __endptr);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI long long __strtoll(const char* __nptr, char** __endptr, int __base, __locale_t) {
+ return std::strtoll(__nptr, __endptr, __base);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI unsigned long long
+__strtoull(const char* __nptr, char** __endptr, int __base, __locale_t) {
+ return std::strtoull(__nptr, __endptr, __base);
+}
+
+} // namespace __locale
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___LOCALE_DIR_SUPPORT_NO_LOCALE_STRTONUM_H
diff --git a/libcxx/include/module.modulemap b/libcxx/include/module.modulemap
index 07ab5649ae45cb..baa6dc0c3f7c36 100644
--- a/libcxx/include/module.modulemap
+++ b/libcxx/include/module.modulemap
@@ -1478,13 +1478,15 @@ module std [system] {
textual header "__locale_dir/support/apple.h"
textual header "__locale_dir/support/bsd_like.h"
textual header "__locale_dir/support/freebsd.h"
+ textual header "__locale_dir/support/fuchsia.h"
+ textual header "__locale_dir/support/no_locale/characters.h"
+ textual header "__locale_dir/support/no_locale/strtonum.h"
textual header "__locale_dir/support/windows.h"
}
module locale_base_api {
textual header "__locale_dir/locale_base_api/android.h"
textual header "__locale_dir/locale_base_api/bsd_locale_fallbacks.h"
- textual header "__locale_dir/locale_base_api/fuchsia.h"
textual header "__locale_dir/locale_base_api/ibm.h"
textual header "__locale_dir/locale_base_api/musl.h"
textual header "__locale_dir/locale_base_api/openbsd.h"
|
|
@mysterymath Can you please let me know if this patch passes on Fuchsia? This is the preferred way for us to define the locale base API for Fuchsia (it follows what we're migrating towards for other platforms as well). |
|
It looks like this still results in a different build failure: |
|
@mysterymath I think my latest push should fix the issue. But this isn't going to be very productive if we have to go back and forth like this, can you please take this patch as a basis and figure out what needs to change in order to make it work on Fuchsia? It should be pretty close modulo a few obvious issues I can't really fix without having access to your setup. |
Use clocale so std::localeconv works.
|
✅ With the latest revision this PR passed the C/C++ code formatter. |
Add `<utility>`
Correct include order.
Include cstdio.
i < l
|
Alright, the latest version of this just passed a Fuchsia CI tryjob: https://ci.chromium.org/ui/p/fuchsia/builders/toolchain.ci.shadow/clang-linux-x64/b8726080809167290305/overview It should be good to go, pending libcxx review. |
philnik777
reviewed
Jan 11, 2025
|
Thanks @mysterymath ! I'm going to merge this since you had it passing on your end (and our CI coverage for this patch is irrelevant since we don't test the affected platform). |
kazutakahirata
pushed a commit
to kazutakahirata/llvm-project
that referenced
this pull request
Jan 13, 2025
…lvm#122489) This follows the same path we've been doing for all platforms so far, moving away from the old definition of the locale base API. Co-authored-by: Daniel Thornburgh <mysterymath@gmail.com>
aheejin
added a commit
to emscripten-core/emscripten
that referenced
this pull request
May 21, 2025
This updates libcxx and libcxxabi to LLVM 20.1.4: https://github.com/llvm/llvm-project/releases/tag/llvmorg-20.1.4 Before going into each additional change of the PR, these are some noteworthy changes from this LLVM release: - Freezing C++03 headers - RFC: https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 - PRs: - llvm/llvm-project#108999 - llvm/llvm-project#109000 - llvm/llvm-project#109001 - llvm/llvm-project#109002 - This copies libc++ headers of the last LLVM 19 release into a separate directory (https://github.com/llvm/llvm-project/tree/main/libcxx/include/__cxx03) and redirects all C++03 workflow there. The motivation is not to fix C++03 related changes unless they are critical bugs, and simplifies the main headers. So the main headers are like ``` #if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS) # include <__cxx03/algorithm> #else ... main header content ... ``` As you can see it looks like we can avoid opting into this by not defining `_LIBCPP_USE_FROZEN_CXX03_HEADERS` at the moment. I think their eventual goal is to remove C++03 support from the main headers but it hasn't seem to have happened yet and I don't know what their timeline for that is. Adding that `__cxx03` directory increases the header size by 10MB. We can get away not using them by not defining `_LIBCPP_USE_FROZEN_CXX03_HEADERS` in this release, so this update does not include that directory. - Sharing of headers between libc++ and libc (Project Hand in Hand) - RFC: https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 - PR: llvm/llvm-project#91651 (More are likely to come) This tries to share some libc headers from libcxx. libcxx's source files can depend on headers from `libc/shared`, `libc/src/__support`, `libc/include/llvm-libc-macros`, and `libc/include/llvm-libc-types`. And it turns out libcxx can also depend on `libc/hdr`, even though the directory is not in the diagram in the RFC. These headers can be only included from `libcxx/src` and not `libcxx/include`, to prevent libcxx's API from changing. So these headers don't need to be copied into `cache/`. - Locale API reimplementation It doesn't seem to have an RFC, but the PRs are: - llvm/llvm-project#113737 - llvm/llvm-project#115176 - llvm/llvm-project#115752 - llvm/llvm-project#122489 It looks this aims provide a new way to define locale API for each platform. Currently Apple, FreeBSD, MSVCRT, and Fuschia are using the new API and the others are still using the old one: https://github.com/llvm/llvm-project/blob/ec28b8f9cc7f2ac187d8a617a6d08d5e56f9120e/libcxx/include/__locale_dir/locale_base_api.h#L116-L138 For our purpose, adding `if defined(__EMSCRIPTEN__)` entry to the list of "old" list seems to work for the moment, but we may need to move to the new way eventually later. --- Additional changes: - Copy `vendor/llvm/default_assertion_handler.in` to `__assertion_handler`: aa53648 Our previous `__assertion_handler` was copied from `libcxx/vendor/llvm/default_assertion_handler.in`. This updates our `__assertion_handler` to the new `libcxx/vendor/llvm/default_assertion_handler.in`. For what this file is, see the PR description of #22994, with which the file was added. - Remove `libcxx/include/__cxx03` directory: d646f6b As I described in "Freezing C++ headers" above, C++03 headers were copied to `include/cxx03` to be "frozen". But by not defining `_LIBCPP_USE_FROZEN_CXX03_HEADERS` we can still use the main headers. This new `__cxx03` header directory is almost 10M and we are not using it in this update, this deletes it. - Define more variables in `__config_site`: 9912236 libcxx decides to almost all configuration macros to be defined. So before it tested whether a macro was defined/undefined, and now it assumes it is defined and tests whether its value is 1/0. Before llvm/llvm-project#112094 `_config_site.in` used to use `#cmakedefine`, which only defined variables when they were enabled, but now it uses `#cmakedefine01`, which always defines variables and assigns 1 or 0 depending on whether the feature is enabled. So this change adds `#define` to each variable that `_config_site.in` has an entry of. The value assigned is 1 if it was defined in our previous Emscripten environment and 0 if not. - Fix Emscripten's locale: 2ae01b0 Before, the code was like https://github.com/emscripten-core/emscripten/blob/dc1abd514b1bade135a01a4453a9ff6def0793b6/system/lib/libcxx/include/__locale_dir/locale_base_api.h#L12-L30 But now they are divided into two parts, one using the new API and the other using old. See "Locale API reimplementation" above. https://github.com/llvm/llvm-project/blob/ec28b8f9cc7f2ac187d8a617a6d08d5e56f9120e/libcxx/include/__locale_dir/locale_base_api.h#L116-L138 This adds Emscripten in the beginning of the "old" API list. (This has to be the beginning; see #23414) - Import libc headers used by libcxx: 12a4ee4, 12a4ee4 and 43c8ce4 This imports a part of libc headers into `system/lib/llvm-libc`. The imported directories are: - `libc/shared` - `libc/src/__support` - `libc/include/llvm-libc-macros` - `libc/include/llvm-libc-types` - `libc/hdr` See "sharing of headers between libc+ and libc" above for details. This also applies llvm/llvm-project#133999, which is a bugfix that has not be backported, which fixes the bug of including from a wrong directory. - `std::uncaught_exception` -> `std::uncaught_exceptions`: 1bf4e78 `std::uncaught_exception` has been deprecated in C++17, so it generates a warning (which we treat as an error). Replaced it with `std::uncaught_exceptions`, which returns the number of uncaught exceptions (but can still be used as a boolean in the test). - Remove `ryu_constants.h` and `ryu_long_double_constants.h` from libc: 5767ac4 These are not used from libcxx and `ryu_long_double_constants.h` is huge (12M).
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This follows the same path we've been doing for all platforms so far, moving away from the old definition of the locale base API.